AquaPress ¼ hp Pump Instruction Manual
Please read all instructions carefully before installing your new systems.
I. Product
The AquaPress ¼ hp Pump is designed for the pumping of non-aggressive water, or water not containing solid particles.
II. Operating conditions:
1. Ambient temp.: Max. +104°F (40°C)
2. Liquid temp.: +39°F (4°C) ~ +104°F (40°C) Max
3. System pressure: Max. 120 PSI
4. Relative humidity: Max. 85% (RH)
III. Installation
1. The pump foundation should be rigid enough to absorb any vibration from the motor, and the
pump should be securely bolted to the foundation.
2. It is recommended that the plumber/installer provides an adequate draining system to avoid
damage in case of leakage, particularly
when installed indoors. When it is installed
outside, it should be covered by a weatherproof housing, well ventilated to allow motor
hear to escape.
3. Connect the suction pipe to the side and
discharge pipe on the top (See Fig. 1).
4. The hose coming from the tank to the pump
is to be connected to the suction inlet on
the side of the pump. The outlet on the top
of the pump connects to the discharge hose
(See Fig. 1).
5. It is required to shut off the pump when the
liquid source is unavailable; although it has
the dry run cut-off function.
6. Regular maintenance includes removing the
cover plate above the suction inlet. Make
sure you have shut off the water coming to
the pump from the tank before beginning
this maintenance. Check the valve for wear.
DO NOT apply any bonded material (such as
silicon, glue etc) to seal the chamber cover
(See Fig. 3).
AquaPress ¼ hp Pump Instructions1
IV. Piping
1. The suction line should be installed as short and straight as possible, with a minimum of bends.
The internal diameter of the suction pipe must be equal to, or greater in size than the ports of
the pump.
2. The connection between the suction line and pump must be airtight, and the suction pipe
must be positioned so it has an upward slope to the pump (thus avoiding the formation of air
pockets).
3. If it is likely the water supply may contain solid particles, such as leaves and sand, a filter should
be installed on the suction line.
4. If hose is used as the suction pipe, it must be non-collapsible.
5. To minimize pressure drop, the discharge pipe should be at least the same size as the discharge
port of the pump.
6. For long suction pipes or high suction lifts over 13 ft., the suction pipe should be of greater
diameter than the suction port.
7. Ensure all connections are completely sealed using thread tape only.
V. Connections to Water Source
1. Flooded Suction—from Well System
With gravity feed to the pump, there are no special adjustments to be made. See Fig. 4 below for recommended layout. Simply make necessary plumbing connections and apply power. The pump is ready
to use.
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AquaPress ¼ hp Pump Instructions
2. Flooded Suction—From City Water Supply
Directly applied city pressure can exceed pump operating pressure and damage the pump. The max
inlet pressure should not exceed 50 psi. Any greater incoming pressure is required to install a pressure
reducing valve on the suction side of the pump. In some areas where local codes restrict maximum
home pressure, a pressure reducing valve is also required on suction to lower the inlet pressure. The
chart below shows the applicable settings for the pressure reducing valve:
Local code limits for
home pressure
No limit
90 psi
80 psi
AquaPress ¼ hp Pump Pressure
reducing valve setting (psi)
50
50
45
3. Suction Lift—Below Ground Water Sources
This connection does not require any adjustment. Whenever the
installation position of the pump is higher than 3 ft. above the lowest
water level, a foot valve must be installed on the end of suction pipe.
Warning
The pump is not designed for continuous operation under low
discharge flows such as slow closing float valves, slow running taps.
Under this application, please install an extra tank (typically 2–3 gallon ) to avoid “cycling.” (Fig. 6)
Please set the extra pressure tank pressure the same as activation pressure. Leaking discharge line and
leaking taps will damage the unit by causing the pump to repeatedly start and stop.
Note: Optional external water pressure tank can be used to decrease the on/off cycle rate of the pump
system, which can extend the life of the pump.
AquaPress ¼ hp Pump Instructions3
VI. Electrical connection
This mark located outside the connection box is a warning for an electrical hazard.
1. Ensure the mains voltage is the same as the value shown on the motor plate and that the pump
is safely connected to ground/earth.
2. The single phase models are supplied with plug and lead and can be connected directly to the
mains supply. The 3 phase models should hook up with a circuit breaker.
VII. Wiring diagram
WARNING:
Risk of electric shock—This pump has not been investigated for use in swimming pool or marine areas.
To reduce the risk of electric shock, connect only to a properly grounded, grounding-type receptacle.
Before operation, please ensure the voltage is correct and the circuit breaker and grounding connectors are all connected in accordance with local regulations.
VIII. Starting
1. Before starting, the pump must be primed. For installation with no inlet pressure, please follow
the procedure as shown in Fig. 8.
2. For installation with inlet pressure, remove the priming plug and allow the water to flow into
the priming chamber until all air is expelled.
3. The priming procedure should be repeated until all air is expelled and the pump delivers a full
stream of water without air bubbles.
4. The pump must always be checked for prime if not used for a prolonged period. It is imperative
to fill the pump with liquid before operation as dry running causes irreparable damage to the
mechanical seal.
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AquaPress ¼ hp Pump Instructions
IX. Precautions
1. The pump should be shut down and the trouble corrected if the pump is running at speed and
found to have any of the following problems:
• No liquid discharged—Not enough liquid discharged
• Excessive vibration—Motor runs hot
2. Do not allow the pump to continually start and stop (cycling) as this will reduce the motor life.
3. Cycling can occur on pressure units when the pressure tank pre-charge drops, or where there
is a leak in the discharge plumbing.
X. Operation and maintenance
Under normal operating conditions, the pump does not require any maintenance as long as the following points are observed:
1. Periodically check the condition of the check valve and strainer (if used).
2. If the pump is to be inactive for long periods, it should be rinsed thoroughly with clean water,
drained and stored in a dry place. It has to be re-primed before Start-Up.
3. If the pump shaft seizes up after periods of
inactivity, please place a screw driver from the
motor end to rotate the shaft. It should free
the pump shaft (See Fig. 9). If this does not
remedy the problem, the unit will need dismantling.
4. Pressure tank air charge should be checked at
regular intervals of every 6 months and after
the pump has not been used for a prolonged
period. To check the Pressure Tank air pressure, turn off power, open a tap on the discharge line to release pressure from the pump, unscrew the black plastic cover and apply an
accurate pressure gauge to the valve as shown in Fig. 10. Pressure should be adjusted to the
original pre-charge as follows:
• AquaPress ¼ hp Pump: 20 psi (1.4 Kg/cmz)
AquaPress ¼ hp Pump Instructions5
Xl. Flooded Suction Performance Table
AquaPress ¼ hp Pump
Inlet pressure (psi)
10
20
30
3 gpm
37
47
57
Flow rate
6 gpm 9 gpm 12 gpm
32
27
22
42
37
32
52
47
42
15 gpm
15
25
35
XII. Frequently asked questions:
5. What causes the AquaPress ¼ hp Pump to start?
The AquaPress ¼ hp Pump has a built-in pressure switch and internal flow switch. Each of these
can turn the pump on depending on water consumption. The pump will start when:
• The pressure is BELOW the pressure switch activation point. OR
• The flow rate is greater than 0.7 gpm.
The preset activation point for each model is provided in the pump specifications.
6. What causes the AquaPress ¼ hp Pump to stop?
The flow switch is designed to automatically stop the AquaPress ¼ hp Pump when flow drops
to below 0.7 gpm. The pump will shut off in a few seconds after flow stops. The pump is programmed to stop after 8 seconds. In addition, the pump will be turned off in the event of dryrun or over temperature alarm.
7. What is the purpose of the built-in pressure tank?
The pressure tank comes from the factory pressurized at approximately 20–43 psi (with the
pump pressure at zero). It is designed to minimize motor startup due to small flow demand or
minor leak of the pipeline.
AquaPress ¼ hp Pump—20 psi (1.4 Kg/cmz)
8. How is the dry-run condition determined and the protection provided?
The dry-run is defined as when the motor is running AND the flow rate is less than 0.3 gpm
AND when pressure is less than the pressure switch setting. The protection is provided:
When the pump is run dry 2 minutes, it will automatically shut off for 10 minutes and then
attempts to restart. When all 3 attempts are failed, the pump will rest for 1 hour and then attempts to restart. This protection mode will be repeated until the water supply is back to normal.
In case the pump is cycling (on-and-off repeatedly) due to small flow (less than 0.3 gpm), air
pocket in the system, air loss in the pressure tank or leak in the pipeline, the protection is provided:
The pump will run for 8 seconds and stop for about 3 seconds. When the cycling mode repeat
for 15 times consecutively, the pump will be rest for 1 hour. Then it will start over the protection
mode until the problem is corrected.
Note: The pump can be reset anytime by removing the power plug.
9. What is the maximum inlet pressure allowed in the AquaPress ¼ hp Pump?
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AquaPress ¼ hp Pump Instructions
The maximum internal system pressure allowed for the AquaPress ¼ hp Pump is 120 psi. The
maximum inlet pressure when added to the AquaPress ¼ hp Pump pressure must not exceed
120 psi.
Additionally, if inlet pressures exceed the built-in pressure switch activation point (20-43 psi
factory default), the pressure switch will be unable to function, and the ability to turn the AQ
Pump on at low flow rates will be lost. In this situation, only the flow switch will be able to turn
the AQ Pump on at flow rates above 0.7 gpm.
XIII. Dimensions: (in.)
AquaPress ¼ hp Pump
Model
AquaPress ¼ hp Pump
A (in.)
13.23
B (in.)
5.08
C (in.)
5.28
XIV. Specification: 60Hz
Model
Power Phase
(HP)
(Ø)
AquaPress ¼
¼
1
hp Pump
Voltage
(V)
115 or
230
Amp’s Preset activation Max discharge Q max.
(A)
pressure (psi)
pressure (psi) ( gpm)
4.0 or
20
31
16.9
2.0
N.W.
(lbs)
16.3
XV. Troubleshooting
Before starting work on the pump, make sure that the electricity supply has been switched off
and that it cannot be accidentally switched on.
Problem
1. Pump does not
start
Cause
a. No power supply
Remedy
Connect the electricity supply
b. Too low/high voltage
Check if supply voltage is within +/10%
Open a tap
c. No water consumption
AquaPress ¼ hp Pump Instructions7
d. Seized-up pump
2. Pump cuts out
during operation
Place a screwdriver against the shaft
end of the motor to check if the rotor
will spin freely, and contact your pump
supplier
Same as above
a. Seized-up pump
b. Overloaded motor
3. Pump starts
when no water is
consumed
4 Pump starts and
stops too frequently
c. Poor water supply
Turn off the power supply and restart
or contact your pump supplier.
Check if pump suction inlet is blocked.
d. The protection for pump dry run or
cycling is activated.
a. Existing pipe is leaking
Check the detailed information per XII
(Frequently asked questions).
Fix the leakage.
b. Defective check valve
Clean or replace a new one.
c. Pipe sucking in air
a. Leakage in suction pipe or air in the
water
Check the suction pipe and water supply
Check the suction pipe and water supply.
b. Discharge flow is too low.
Set your tap on a higher water flow.
5. Electric shock
a. Defective ground connection
6. Pump does not
a. Poor water supply or air suck in.
stop when water is
not consumed
b. Defective check valve.
7. Pump runs nor- a. 3-phase motor runs in wrong rotatmally but with very ing direction
low discharge flow
b. Poor water supply
Correct the ground connection.
1. Turn off the power supply and open
the refilling plug to release the air,
then restart.
2. In case of long suction pipes, turn
off the power and make sure if water
supply is adequate.
Clean or replace with a new valve.
Switch any of the 2 wires from motor
terminal to correct rotation.
Check if water supply is adequate and
if the suction pipe is blocked.
quabarrel.com
www.Aquabarrel.com
23219 Stringtown Rd, #275
Clarksburg, MD 20871
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AquaPress ¼ hp Pump Instructions